M3 X 16mm 컵 포인트 소켓 세트 스크류 | 316 스테인리스 스틸 (50 / Pkg.)

These set screws held my gear perfectly in place on the shaft; the cup point bites in nicely without slipping. The 316 stainless feels solid and won't rust in my outdoor setup.

Had to swap a worn-out pulley on a stainless rig, and these set screws fit the M3 threads perfectly. The cup point bit into the shaft without slipping, and the 16mm length gave just enough reach for a secure hold.

The 316 stainless finish feels properly marine-grade, not the cheap plated stuff I've wasted money on before. The cup point bites into the shaft nicely for a 16mm length, and the hex socket drive hasn't stripped under decent torque. These are the kind of fasteners you buy once and forget about.